package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import lombok.Builder;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.web.server.WebServer;
import org.springframework.stereotype.Service;
import org.springframework.util.CollectionUtils;
import org.springframework.web.socket.sockjs.transport.session.WebSocketServerSockJsSession;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * 订单业务层
 */
@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
    @Autowired
    AddressBookMapper addressBookMapper;

    @Autowired
    OrderMapper orderMapper;
    @Autowired
    ShoppingCartMapper shoppingCartMapper;
    @Autowired
    OrderDetailMapper orderDetailMapper;
    @Autowired
    UserMapper userMapper;
    @Autowired
    WeChatPayUtil weChatPayUtil;
    @Value("${sky.shop.address}")
    private String shopAddress;
    @Value("${sky.baidu.ak}")
    private String ak;

    /**
     * 生成订单
     *
     * @param ordersSubmitDTO
     * @return
     */
    @Override
    public OrderSubmitVO submit(OrdersSubmitDTO ordersSubmitDTO) {
        // 获取当前登录用户ID
        Long userID = BaseContext.getCurrentId();
        //构建订单数据
        //获取地址数据
        // 根据地址ID获取地址数据
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());

        if (addressBook == null) {
            // 如果地址数据为空，抛出地址簿业务异常
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }


        //检查用户的收货地址是否超出配出范围
        checkOutOfRange(addressBook.getCityName()+addressBook.getDistrictName()+addressBook.getDetail());

        //从购物车中查询所有购物车
        // 根据用户ID查询购物车列表
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.selecTByCondition(ShoppingCart.builder().userId(userID).build());
        if (shoppingCartList == null || shoppingCartList.size() == 0) {
            // 如果购物车列表为空或无购物车，抛出订单业务异常
            throw new OrderBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        Orders orders = new Orders();
        // 将订单提交数据对象的属性值复制给订单对象
        BeanUtils.copyProperties(ordersSubmitDTO, orders);
        // 设置订单的地址信息
        orders.setAddress(addressBook.getDetail());
        // 设置订单的收件人
        orders.setConsignee(addressBook.getConsignee());
        // 设置订单的联系电话
        orders.setPhone(addressBook.getPhone());
        //订单编号
        // 生成订单编号
        String orderNumber = String.valueOf(System.currentTimeMillis());
        // 设置订单编号
        orders.setNumber(orderNumber);
        // 设置订单的用户ID
        orders.setUserId(userID);
        // 获取当前时间
        LocalDateTime orderTime = LocalDateTime.now();
        // 设置订单时间
        orders.setOrderTime(orderTime);
        // 设置订单的支付状态
        orders.setPayStatus(Orders.UN_PAID);
        // 设置订单
        orders.setStatus(Orders.PENDING_PAYMENT);
        //插入订单表
        orderMapper.insert(orders);
        Long ordersId = orders.getId();
        //插入订单明细表
        ArrayList<OrderDetail> orderDetails = new ArrayList<>();
        shoppingCartList.forEach(shoppingCart -> {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(shoppingCart, orderDetail);
            orderDetail.setOrderId(ordersId);
            orderDetails.add(orderDetail);
        });
        //批量插入订单明细数据
        orderDetailMapper.insertBatch(orderDetails);
        //清空购物车
        shoppingCartMapper.deleteByUserId(userID);
        //构建一个vo
        OrderSubmitVO orderSubmitVO = OrderSubmitVO
                .builder()
                .id(ordersId)
                .orderTime(orderTime)
                .orderNumber(orderNumber)
                .orderAmount(ordersSubmitDTO.getAmount())
                .build();
        return orderSubmitVO;
    }



    /**
     * 拉起订单
     *
     * @param ordersPaymentDTO
     * @return
     */
    @Override
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前用户登录id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口 生成预支付交易单
     /*   JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(),//商户订单号
                new BigDecimal(0.1),//支付金额
                "苍穹外卖订单",//商品描述
                user.getOpenid()
        );*/
        JSONObject jsonObject = new JSONObject();
        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }
        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));
        return vo;
    }

    /**
     * 支付成功 修改订单·状态
     * @param outTradeNo
     */
    @Override
    public void paySuccess(String outTradeNo) {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();

        // 根据订单号查询当前用户的订单
        Orders ordersDB = orderMapper.getByNumberAndUserId(outTradeNo, userId);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
    }
    /**
     * 历史订单查询
     * @param
     * @param pageSize
     * @param status
     * @return
     */
    @Override
    public PageResult pageQuery4USer(int pageNum, int pageSize, Integer status) {
         //设置分页
        PageHelper.startPage(pageNum,pageSize);
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);

        //分页查询条件
        Page<Orders> page= orderMapper.pageQyery(ordersPageQueryDTO);
        List<OrderVO> list = new ArrayList<>();
        //查询订单明细 并封装到orderVo进行响应
        if (page!=null&& page.getTotal()>0){
            for (Orders orders : page) {
                Long orderId = orders.getId();
                //查询订单明细
                List<OrderDetail> orderDetails= orderDetailMapper.getByOrderId(orderId);
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders,orderVO);
                orderVO.setOrderDetailList(orderDetails);
                list.add(orderVO);
            }
        }
        return new PageResult(page.getTotal(),list);
        }

    /**
     * 查询订单详情
     * @param id
     * @return
     */
    @Override
    public OrderVO details(Long id) {

       /* 根据传入的id查询对应的订单信息，返回一个Orders对象，并将其赋值给变量orders。
        根据orders的id查询对应的订单详情信息，返回一个List<OrderDetail>对象，并将其赋值给变量orderDetailList。
        创建一个OrderVO对象，并将其赋值给变量orderVO。
        使用工具类BeanUtils将orders的属性复制到orderVO中。
        将orderVO的orderDetailList属性设置为orderDetailList。
        返回orderVO对象作为结果*/
        //根据id查询订单
        Orders orders= orderMapper.getById(id);
        //查询该订单对应的菜品、套餐明细
        List<OrderDetail> orderDetailList= orderDetailMapper.getByOrderId(orders.getId());
        //将该订单及其详情封装到OrderVo并返回
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders,orderVO);
        orderVO.setOrderDetailList(orderDetailList);
        return orderVO;
    }

    /**
     * 用户取消订单
     * @param id
     */
    @Override
    public void userCancelById(Long id) throws Exception {
        //根据id查询订单
        Orders ordersDB= orderMapper.getById(id);
        //校验订单是否存在
        if (ordersDB==null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //订单状态 1代付款 2待结单3已接单4派送中5已完成6已取消
        if (ordersDB.getStatus()>2){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        //订单处于待结单状态下取消 需要进行退款
        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)){
            //调用微信支付退款接口
            /*weChatPayUtil.refund(
                    ordersDB.getNumber(),//商户订单号
                    ordersDB.getNumber(),//商户退款单号
                    new BigDecimal(0.01),//退款金额 单位 元
                    new BigDecimal(0.01));//原订单金额*/
            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);

        }
        //更新订单状态 取消原因 取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    /**
     * 再来一单
     * @param id
     */
    @Override
    public void repetition(Long id) {
        //查询当前用户id
        Long userId = BaseContext.getCurrentId();
        //根据订单id查询当前订单详情
        List<OrderDetail> orderDetailList=orderDetailMapper.getByOrderId(id);
        //将订单详情对象转换为购物车对象
        List<ShoppingCart> shoppingCartList=orderDetailList.stream().map(x->{
            ShoppingCart shoppingCart = new ShoppingCart();
            //将原订单详情里面菜品信息重新复制到购物车对象中
            BeanUtils.copyProperties(x,shoppingCart,"id");
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());
            return shoppingCart;
        }).collect(Collectors.toList());
     //将购物车对象批量添加到数据库
        shoppingCartMapper.insertBatch(shoppingCartList);
    }

    /**
     * 催单
     * @param id
     */
    @Override
    public void reminder(Long id) {
// 根据订单号查询当前用户的订单
        Orders ordersDB= orderMapper.getById(id);
        if (ordersDB==null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        HashMap<String, Object> map = new HashMap<>();
        map.put("type",2);
        map.put("orderId",ordersDB.getId());
        map.put("content","订单号："+ordersDB.getNumber());
    }

    /**
     * 各个状态的订单数量统计
     * @return
     */
    @Override
    public OrderStatisticsVO statistics() {
        // 根据状态，分别查询出待接单、待派送、派送中的订单数量
        Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);

        // 将查询出的数据封装到orderStatisticsVO中响应
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();

        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        return orderStatisticsVO;
    }

    /**
     * 接单
     * @param ordersConfirmDTO
     */
    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();
        orderMapper.update(orders);

    }

    /**
     * 拒单
     * @param ordersRejectionDTO
     */
    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(ordersRejectionDTO.getId());

        // 订单只有存在且状态为2（待接单）才可以拒单
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        //支付状态
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == Orders.PAID) {
            //用户已支付，需要退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }

        // 拒单需要退款，根据订单id更新订单状态、拒单原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());

        orderMapper.update(orders);
    }

    /**
     * 取消订单
     * @param ordersCancelDTO
     */
    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) throws Exception {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());

        //支付状态
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == 1) {
            //用户已支付，需要退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }

        // 管理端取消订单需要退款，根据订单id更新订单状态、取消原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersCancelDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    /**
     * 派送订单
     * @param id
     */
    @Override
    public void delivery(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        // 校验订单是否存在，并且状态为3
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为派送中
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);

        orderMapper.update(orders);
    }

    /**
     * 完成订单
     * @param id
     */
    @Override
    public void complete(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        // 校验订单是否存在，并且状态为4
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为完成
        orders.setStatus(Orders.COMPLETED);
        orders.setDeliveryTime(LocalDateTime.now());

        orderMapper.update(orders);
    }


    /**
     * 订单条件搜索
     * @param ordersPageQueryDTO
     * @return
     */
    @Override
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());

        Page<Orders> page =orderMapper.pageQyery(ordersPageQueryDTO);
        //部分订单状态，需要额外返回订单菜品信息 将Orders转化为OrderVo
        List<OrderVO> orderVOList= getOrderVOLixst(page);
        return new PageResult(page.getTotal(), orderVOList);
    }

    private List<OrderVO> getOrderVOLixst(Page<Orders> page) {
        //需要返回订单菜品信息 自定义orderVO响应结果
        List<OrderVO> orderVOList= new ArrayList<>();
        List<Orders> ordersList= page.getResult();
        if (!CollectionUtils.isEmpty(ordersList)){
            for (Orders orders : ordersList) {
                //将共同字段复制到OrderVO
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders,orderVO);
                String orderDishes=getOrderDishesStr(orders);
                //将订单菜品信息封装到orderVO中 并添加到orderVoList
                orderVO.setOrderDishes(orderDishes);
                orderVOList.add(orderVO);
            }
        }
        return orderVOList;
    }

    private String getOrderDishesStr(Orders orders) {
        //查询订单菜品详细信息 （订单中的菜品和数量）
        List<OrderDetail> orderDetailList=orderDetailMapper.getByOrderId(orders.getId());
        //将每一条订单菜品信息拼接为字符串
        List<String> orderDishList=orderDetailList.stream().map(x->{
            String orderDish=x.getName() + "*" + x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());
        //将订单对应的所有菜品信息拼接在一起
        return String.join("",orderDishList);
    }

    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }


}
